Lathe tool-holder.



T. B. VAN AUKEN LATHE TOOL HOLDER.

APPLIUATION FILED MAY 20, 1913. RENEWED new. 22, 1914.

1,133,591. Patented Mar.30,1915.

THE NORRIS PETERS 60., PHOTDJJTHCL, WASHINGTON. D. c.

WW STATES rrnr rrrcn.

LATHE TOOL-HOLDER.

Application filed. May 20, 1913, Serial No. 768,709. Renewed Qctcber 22,191%.

To aZZ whom it may concern Be it known that I, THoMAs B. VAN AUKEN, acitizen of the United States, residing at Auburn, in the county ofCayuga and State of New York, have invented certain new and usefulImprovements in Lathe Tool-Holders, of which the following is aspecification.

The invention relates generally to an improvement in tool holders, andparticularly to a tool holder adapted for ready cooperation with theusual lathe tool post and constructed to provide for the convenient andaccurate adjustment of the holder and tool without necessitating the useof the usual shims for the purpose.

The main object of the present invention is the provision of a toolholder in which tools of various types may be readily secured, the saidholder including a transversely operating adjusting screw whereby thetool may be arranged and secured in any desired adjustmentlongitudinally of the tool post.

The invention in the preferred form of details, will be described in thefollowing specification, reference being had particularly to theaccompanying drawings, in which Figure l is a perspective view of theimproved tool holder. Fig. 2 is a similar view, with the parts shownseparated. Fig. 8 is an end elevation of the tool holder. Fig. 4 is abroken end elevation illustrating the application of the auxiliary clampfor receiving tools of a particular type. Fig. 5 is a perspective viewof such auxiliary clamp, a tool being shown in place therein.

The improved tool holder comprises what I term a main clamping plate 1,arranged on edge, and having the outer surface formed with alongitudinally extending tool receiving recess 2. This recess opensthrough the upper edge of the plate, but not through the lower edgethereof, its lower boundary being formed by an undercut wall 3. Circularstuds l project from that face of the plate opposite the recess, beingarranged adjacent the respective ends of the plate, and diametricallyreduced beyond the surface of the plate to form what may be termed bolts5, the latter being exteriorly threaded for the reception of nuts 6, fora purpose which will later appear. An edge clamping plate 7 is arrangedfor cotiperation with the main clamping plate 1, said plate 7 beingdesigned Specification of Letters Patent.

Patented Mar. 3i), 1915.

Serial no. 868,148.

to rest upon the upper edge of the main clamping plate and at rightangles to said mam clamping plate, the edge clamping plate projectingbeyond the recessed surface of the main clamping plate to present anedge 8 coextensive with the thickness of the wall 3 of said recess. Theprojecting portion 8 of'the edge clamping plate is undercut at 9 to formin effect the opposing undercut wall of the recess 2. By thisarrangement the main and edge clamping plates together form a toolreceiving recess having opposing undercut walls to receive and hold thetool 10, as wi l be apparent from Fig. 1 of the drawing. The edgeclamping plate is secured in place by clamping screws 11 passing throughopenings 12 formed in said plate inwardly beyond the main clampingplate, said screws taking into threaded openings 13 in the studs 4.Intermediate the openings 12 the edge clamping plate is reduced in widthas at 1% to permit the coiiperation of the holder with the tool post.

A tool post engaging plate 15 is provided, being arranged on edge, or inparallel relation to the main clamping plate. Said plate 15 is slottedat 16 from one edge to cooperate with the bolts 5, the nuts 6 securingthe engaging plate in place. in this position the slotted edge of theengaging plate bears beneath and against the edge clamping plate, sothat the screws 11 aid in preventing independent movement of theengaging plate in one direction.

One of the important features of the present invention is the provisionof means whereby the tool holder may be readily and accurately adjustedin the tool post without the use of the usual shims. in carrying outthis feature of the invention I secure in the relatively forward portionof the main clamping plate below the recessed wall 3 a stud 17, whichmay be swiveled, threaded, or otherwise connected with the clampingplate. The stud 17 is provided with an enlarged head 18 having adiametrically extending opening 19 interiorly threaded for the receptionof an elongated adjusting screw 20, the latter having the usual milledoperating head 21. The adjusting screw is of such length and so threadedthat it is capable of considerable adjustment transverse the mainclamping plate, as will be apparent from Fig. 3 of the drawings.

From the foregoing it will be seen that the tool holder includes a plateadapted to be permanently secured in the tool post, a tool carrieradjustably connected to the plate, and an adjusting screw mounted on thecarrier by means of which it may be adjusted in a vertical directionwith relationto the plate and tool post.

In the use of the device, with the parts assembled and a particular toolclamped in position, the holder is inserted in the usual tool post byremoving the plate or bar 15 from the tool clamp and placing it in thepost opening with the open ends of the slots 16 disposed uppermost,securing it in place upon the usual wedge base, by the tool postfastening screw. After the plate or bar 15 has been secured in the toolpost, the tool clamp is applied to the plate by passing the bolts 5 downinto the slots 16, which owing to their elongation permit the clamp tobe adjusted with relation to the plate or bar 15. The tool holder issecured to the plate or bar 15 by means of the nuts 6. In this positionthat portion of the tool post on one side of the opening therein passesupwardly between the studs 4 and through the reduced portion 14 of theedge clamping plate. The lower end of the adjusting screw 20 rests uponthe circular base of the'tool post at all times. lVhen adjustment of thetool in its position in the tool post is required, it is obviously onlynecessary to slack off the nut 6 and operate the adjusting screw 20 inthe desired direction and to the desired extent. After the tool has beenadjusted the nuts 6 are tightened. The adjusting screw will operate as ameans to fix the tool holder against change after adjustment, and whileproviding a simple, quick, and effective means to accomplish suchadjustment is of further advantage in dispensing with the usual shimsfor this purpose.

In the use of particular tools it may be found desirable to use anauxiliary clamping means, and to this end I contemplate the use of whatI term an auxiliary clamping block 22 formed in its relatively innersurface with a tool receiving recess 23, shown diagonally arranged inthis instance, the bottom wall of the recess being longitudinallyslotted at2 l for a portion of its length to permit the necessaryclamping movement of the opposing walls of the recess. The clamp blockis provided on that surface in which the recess is formed with aprojecting section or web 25 having the walls thereof undercut at 26 tocooperate with the undercut walls of the recess 2 of the main holder.The application and position ofthe clamping block in the main toolholder will be obvious, being clearly shown in Fig. 4 of the drawings.

What is claimed is 1. A tool holder including a main clamping plate, anedge clamping plate, means for removably secured to and in spacedparallel relation to the main clamping plate.

3. A toelholder including a main clamping plate, an edge clamping plate,means for adjusting the edgeclamping plate with relation to the mainclamping plate, said clamping plates being together formed to provide atool receiving recess having undercut walls, and an adjusting screwcarried by the main clamping plate.

4:. A tool holder including a main clamping plat-e, an edge clampingplate, means for ad usting the edge clamping plate with relation to themain clamping plate, said clamping plates being together formed toprovide a tool receiving recess having undercut'walls, and an adjustingscrew carried by the main clamping plate.

5. A tool holder including a main clamping plate, an edge clampingplate, means for ad usting the edge clamping plate with relation to themain clamping plate, said clamping plates being together formed toprovide a tool receiving recess having undercut walls, a stud movablyconnected to the main clamping plate,;and an adjusting screw threaded tothe stud.

6. A tool holder including a main clamping plate, studs projectinglaterally therefrom and having reduced threaded bolt ends,

an edge clamping plate arranged'at right i angles to the main clampingplate, screw bolts passed through the edge clamping plate and seating inthe studs, said edge and main clamping plates being together formed toprovide a tool receiving recess having undercut walls, and a tool postengaging plate removably engaging the threaded bolt ends of the studs.

7. A tool holder including cooperating ,1

clamping plates together formed to provide a recess having undercutwalls, means for connecting the plates to adjust the recess walls withrelation to each other, and a clamp block formed with a tool receivingrecess and having a web projection to engage said walls.

8. A tool holder including cooperating clamping plates together formedto provide a recess having undercut walls, means for connecting theplates to adjust the recess walls with relation to each other, and aclamp block having a Web projection to be secured between said recesswalls, said clamp block being formed with a tool receiving recess havingthe bottom wall formed with a longitudinally extending slot.

9. A lathe tool holder designed for cooperation with a tool post, aplate adapted to be permanently secured in the tool post, a tool carrieradjustably connected with the plate, and an adjusting screw mounted onthe car rier and providing means by which the carrier may be adjustedvertically with relation to the plate and tool post.

10. A lathe tool holder designed for cooperation with a tool post, aplate adapted to be permanently secured in the tool post, a tool carrierarranged parallel to the plate, and means on one side of the carrier,said means having an adjustable connection with the plate, so that thecarrier may be adjusted in a vertical plane With relation to the plateand post.

11. A lathe tool holder designed for cooperation with a tool post, aplate adapted to be permanently secured in the tool post, a tool carrierarranged parallel to the plate, means on one side of the carrier havingan adjustable connection with the plate, and an adjusting screw mountedon the opposite side of the carrier and resting upon the base of thetool post.

12. A lathe tool holder designed for cooperation with a tool post, aplate adapted to be permanently secured in the post and provided withelongated slots, a tool carrier arranged parallel to the plate, boltsmounted on one side of the carrier and arranged in the slots, nuts onthe bolts, and an adjusting screw mounted on the other side of thecarmen In testimony whereof I affix my signature in presence of twowitnesses.

THOMAS B. VAN AUKEN.

Witnesses ROBERT J. BUNITT, FRANcIs C. RAINEs.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Eatents,

Washington, D. C.

